DanielSpaniel has asked for the wisdom of the Perl Monks concerning the following question:

Hi, Hoping somebody can help me please, because I'm not very familiar with installing via CPAN. My machine is running Fedora 15 (64-bit), and I'm trying to install Net:SSH2 via CPAN, but I am running into problems (as shown by the output below). I resolved one previous issue, with it being unable to locate the C compiler, but I do not know how to progress further, from where I am now. It seems to start failing at the "Can't link/include 'libssh2.h', 'ssh2'" line. Perl version is v5.12.4.(64-bit). 

cpan[1]> install Net::SSH2
Going to read '/root/.cpan/Metadata'
  Database was generated on Mon, 29 Aug 2011 05:27:45 GMT
Running install for module 'Net::SSH2'
Running make for R/RK/RKITOVER/Net-SSH2-0.39.tar.gz
Checksum for /root/.cpan/sources/authors/id/R/RK/RKITOVER/Net-SSH2-0.3
+9.tar.gz ok
Scanning cache /root/.cpan/build for sizes
......................................................................
+......DONE

  CPAN.pm: Going to build R/RK/RKITOVER/Net-SSH2-0.39.tar.gz

Subroutine checklibs redefined at inc/Module/Install/CheckLib.pm line 
+11.
Subroutine assertlibs redefined at inc/Module/Install/CheckLib.pm line
+ 25.
Subroutine _author_side redefined at inc/Module/Install/CheckLib.pm li
+ne 39.

The libssh2 library is required by this module.  If you don't have it,
+ you can
download it from http://www.libssh2.org; you may also need OpenSSL, wh
+ich can be
obtained from http://www.openssl.org.

Debian:   sudo aptitude install libssh2-1-dev
OpenSUSE: sudo zypper in libssh2-1 libssh2-devel

You can pass your libssh2 lib and include dirs on the command line. E.
+g.:

    perl Makefile.PL lib=$HOME/libssh2/lib inc=$HOME/libssh2/include

Can't link/include 'libssh2.h', 'ssh2'
No 'Makefile' created  RKITOVER/Net-SSH2-0.39.tar.gz
  /usr/bin/perl Makefile.PL -- NOT OK
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
Failed during this command:
 RKITOVER/Net-SSH2-0.39.tar.gz   : writemakefile NO -- No 'Makefile' c
+reated

[download]

With regards to libssh2, then I have already checked to make sure it is installed, per below:

yum install libssh2
Loaded plugins: langpacks, presto, refresh-packagekit
Setting up Install Process
Package libssh2-1.2.7-1.fc15.x86_64 already installed and latest versi
+on
Nothing to do

[download]

Replies are listed 'Best First'.
Re: Need Help Installing Net::SSH2
by Khen1950fx (Canon) on Aug 29, 2011 at 15:36 UTC
    You'll need to download and manually install libssh2. After make install, run /sbin/ldconfig /usr/local/lib, then install Net::SSH2. Fedora rpms have the nasty habit of not doing ldconfig correctly. I use Fedora, but I installed libssh2 from a Debian tarball and ran ldconfig. Worked.
[reply]

      Hi Khen1950fx, Thx for the suggestion, I am trying it now, but not too familiar (yet) with installing as you suggest. I've manually downloaded a recent version of libssh2; unzipped it, untarred it and stuck it into a local directory. Now I have a directory with the following in it:

      config.guess  configure  INSTALL     LICENSE      mkinstalldirs  src  win32    config.sub    include    install-sh  Makefile.in  README   ssh2_sample.c

      I have run ./configure, and it ran through a bunch of stuff, but ultimately didn't seem to like something, and gave up with the following message:

      checking for OpenSSL... configure: error: Cannot find OpenSSL's <evp.h> or <hmac.h>

      Can you help me go from here please? I really appreciate your help.

[reply]
[d/l]
[select]
        Go into the directory that you untarred the src to and type: 
        ./configure --help

        [download]
        A list of all the different options will popup. I would recommend doing: 
        ./configure --enable-shared --with-gnu-ld

        [download]
        The "--with-gnu-ld" is necessary in order to properly do ldconfig. So the mantra is: 
        ./configure --enable-shared --with-gnu-ld
make
make check
make install
/sbin/ldconfig /usr/local/lib

        [download]
        Now run 
        whereis libssh2

        [download]
        If everything's in order, then it should return something like: 
        /usr/local/lib/libssh2.so
/usr/local/lib/libssh2.a
/usr/local/lib/libssh2.la

        [download]
        Update: I think that you have the same problem with OpenSSL. Here's the most recent tarball:

        http://www.openssl.org/source/openssl-1.0.0d.tar.gz

        It's a slightly more complicated procedure. First, you need to remove the current openssl include headers. Then do 
        ./Configure linux-elf -march=pentium
make 
make test 
make install

        [download]
        Next, you must manually install Net::SSH2. 
        export LD_LIBRARY_PATH=/usr/local/lib
perl Makefile.PL lib=/usr/local/lib
make
make test
make install

        [download]
        Now, you're good to go...
[reply]
[d/l]
[select]
Re: Need Help Installing Net::SSH2
by Anonymous Monk on Aug 29, 2011 at 14:42 UTC
    You need libssh2-devel.
[reply]
      Thx for the reply, but I just installed libssh2-devel (on your advice), and retried Net:SSH2 in CPAN, but still fails in the same place. openssl is also installed already. (Package openssl-1.0.0d-1.fc15.x86_64 already installed and latest version)
[reply]
        The Makefile.PL script from the latest versions of Net::SSH2 accepts both an inc and lib parameters with the place of libssh2 library and include files. For instance: 
        Makefile.PL inc=/usr/include lib=/usr/lib64

        [download]
        Besides that, Net::OpenSSH::Compat(::SSH2) implements most of Net::SSH2 API on top of Net::OpenSSH and it's pretty easy to install on Unix/Linux system including Fedora.
[reply]
[d/l]
[select]

Back to Seekers of Perl Wisdom